.section .text  
# .global main
# main:
.global _start 
 
_start:    
movl $0xc, %edx 
movl $msg, %ecx 
movl $1, %ebx  
movl $4, %eax 
int $0x80    
 
movl $0, %ebx 
movl $1, %eax
int $0x80   
msg:
.ascii "hello world\n"
